# -*- coding: utf-8 -*-
"""
-------------------------------------------------
   File Name：     day153_pyqt5_qProcessBar
   Description :
   Author :       fuml
   date：          2019/9/22
-------------------------------------------------
   Change Activity:
                   2019/9/22:This example shows a QProgressBar widget.
-------------------------------------------------
"""
import  sys
from  PyQt5.QtWidgets import QWidget,QProgressBar,QPushButton,QApplication
from PyQt5.QtCore import QBasicTimer

class Example(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.pbar=QProgressBar(self)
        self.pbar.setGeometry(30,40,200,25)

        self.btn = QPushButton('start',self)
        self.btn.move(40,80)
        self.btn.clicked.connect(self.doAction)

        self.timer= QBasicTimer()
        self.setp= 0

        self.setGeometry(300,300,280,200)
        self.setWindowTitle('Progress Bar')
        self.show()

    def timerEvent(self, e):
        if self.setp>=100:
            self.timer.stop()
            self.btn.setText('Finished')
            return
        self.setp+=1
        self.pbar.setValue(self.setp)

    def doAction(self):
        if self.timer.isActive():
            self.timer.stop()
            self.btn.setText('Start')
        else:
            self.timer.start(100,self)
            self.btn.setText('Stop')

if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())